Drainage ditch structure around foundation pit

Abstract

The invention discloses a drainage ditch structure around a foundation pit, and relates to the technical field of building construction, the drainage ditch structure comprises a waterproof layer, a plurality of bases, a plurality of positioning rods and a plurality of drainage devices; the waterproof layer is laid on the bottom wall of the groove, and extension parts are arranged on the two sides of the waterproof layer; the base is arranged in the groove; the bottom of the base abuts against the waterproof layer in an attached mode, and extension plates are arranged on the two sides of the base. A plurality of through holes are formed in the extension plate, and grouting holes are formed in the positioning rods; mounting grooves are formed in the base, and a plurality of mounting grooves are communicated to form a mounting space; a drainage channel is arranged in the drainage device, and a plurality of drainage holes communicated with the drainage channel are formed in the top of the drainage device. The structure is short in construction period and low in construction difficulty, and can be stabilized around the foundation pit for a long time to play a role in intercepting and draining water.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a drainage ditch structure around a foundation pit. Background Art

[0002] During the foundation pit support construction process, in order to prevent surface water from flowing into the foundation pit, causing the support structure to be eroded, or surface water from seeping into the support structure, affecting the stability of the support structure and causing safety hazards, especially in expansive soil areas, attention must be paid to soil sealing and anti-seepage, and drainage work must be done well. Drainage ditches for intercepting surface water are usually constructed around the outside of the top of the foundation pit.

[0003] Currently, the most common methods for constructing drainage ditches are brickwork and cast-in-place concrete. Brickwork drainage ditches can crack and break as the foundation pit settles, and cracks are prone to forming at the interface between the surface and the hardened pavement, allowing surface water to seep in, affecting the stability of the support structure and requiring frequent repairs. Cast-in-place concrete drainage ditches offer high strength, but require a concrete cushion, formwork, and concrete pouring, a complex process with high material and labor costs. Therefore, they are generally not a preferred option for temporary projects.

[0004] Therefore, there is an urgent need for a drainage ditch structure that is convenient to construct and can stably intercept and drain water for a long time. Summary of the Invention

[0005] The present application provides a drainage ditch structure around a foundation pit, which has a short construction period and low construction difficulty, and can be stable for a long time around the foundation pit to play the role of intercepting and draining water.

[0006] This application provides a drainage ditch structure around a foundation pit, which adopts the following technical solutions: A drainage ditch structure around a foundation pit is provided, the structure being arranged around the foundation pit, wherein a groove for its construction is excavated around the foundation pit, the structure comprising a waterproof layer, a plurality of bases, a plurality of positioning rods and a plurality of drainage devices; The groove is an arc-shaped groove with an arc mouth pointing vertically upward, and the groove extends outward to form a drainage section for draining surface water; The waterproof layer is laid on the bottom wall of the groove, and has extensions on both sides thereof extending outwardly and located on the ground surface around the foundation pit; the base is arranged in the groove, and a plurality of the bases are compactly arranged in the groove; the bottom of the base is in contact with the waterproof layer, and has extension plates extending outwardly on both sides thereof, the bottom of which is in contact with the extensions; The extension plate is provided with a plurality of through-holes for the positioning rods to pass through, and the interior of the positioning rods is provided with grouting holes for pouring concrete into the foundation; after the positioning rods pass through the through-holes and pierce the extension portion, the base is positioned so that the top of the extension plate is flush with the end surface of the ground, one end of the grouting hole is exposed and the other end is located in the foundation; The base has an installation groove for installing the drainage device, a plurality of the installation grooves are connected to form an installation space, and the plurality of drainage devices are compactly arranged in the installation space; The drainage device has a drainage channel inside, and the top of the drainage device has a plurality of drainage holes communicated with the drainage channel.

[0007] By adopting the above technical solution, the waterproof layer can effectively reduce the infiltration of surface water into the foundation around the groove, and the positioning rod can effectively improve the structural stability and position stability of the drainage ditch. At the same time, the foundation after pouring concrete has stronger structural stability, reducing the impact of foundation settlement on the drainage ditch structure, and the construction of the drainage ditch structure is more convenient and quick; in the process of surface water flowing toward the direction close to the foundation pit, it will enter the drainage channel through the drainage hole and then be discharged along the drainage channel, so that the drainage ditch structure can be stable around the foundation pit for a long time and play a role in intercepting and draining water.

[0008] Optionally, the drainage device includes a fixed member, a rotating member and two drainage plates, the drainage holes are opened on the drainage plates, and the two drainage plates are respectively arranged on the fixed member and the rotating member; The rotating member is rotatably connected to the fixed member, the fixed member is fixedly connected to the base and the bottom of the fixed member is in contact with and abuts against the bottom wall of the mounting groove. The rotating member is kept in contact with and abuts against the bottom wall of the mounting groove during rotation in the mounting groove. When the rotating part rotates to the extreme position in the direction approaching the base, the drainage device is located as a whole in the installation space, the two drainage plates are respectively located on the top of the fixed part and the rotating part, and the fixed part and the rotating part together form the drainage channel; when the rotating part rotates to the extreme position in the direction away from the base, the rotating part leaves the installation space and is located above the fixed part.

[0009] By adopting the above technical solution, when there is mud and sand blocking the drainage channel, the staff can rotate the rotating part to expose the drainage channel to the outside, making it easier for them to remove the mud and sand, thereby effectively improving the stability and reliability of the drainage ditch structure in long-term use.

[0010] Optionally, the drainage board has a plurality of anti-slip protrusions for stepping on.

[0011] By adopting the above technical solution, the probability of workers slipping due to the wet surface of the drainage board when passing over the drainage ditch structure can be effectively reduced, thereby effectively improving the safety of workers moving around the foundation pit.

[0012] Optionally, when the rotating member rotates to an extreme position in a direction away from the base, the anti-slip protrusion on one drain board is inserted into the drainage hole on the other drain board.

[0013] By adopting the above technical solution, when the drainage holes are blocked by mud and sand, when the staff rotates the rotating part so that it is located above the fixed part, multiple drainage holes can be inserted with anti-slip protrusions to clear the blocked mud and sand, thereby effectively improving the staff's efficiency in clearing the blocked mud and sand.

[0014] Optionally, a drainage groove is provided on the side of the rotating member facing away from the drainage plate. When the rotating member rotates to an extreme position toward the base, both ends of the drainage groove connect the drainage channel and the space between the rotating member and the top of the base.

[0015] By adopting the above technical solution, when the drainage board cannot drain water smoothly because the drainage holes are blocked by mud and sand, the surface water can flow through the drainage board and into the drainage channel through the drainage groove and be discharged, thereby effectively improving the drainage effect of the drainage ditch structure and its drainage stability.

[0016] Optionally, the drainage device further includes a floating member; The floating member is arranged on the rotating member, and the density of the floating member is less than the density of surface water.

[0017] By adopting the above technical solution, when a large amount of surface water flows into the drainage channel, the floating part will be rotated a certain extent in the direction away from the base due to the buoyancy of the surface water. At this time, the top part of the rotating part extends out of the installation space, which can further effectively prevent the flow of surface water. At this time, the surface water flow is convenient for flushing and clearing the mud and sand in the drainage holes on the corresponding drainage plate on the rotating part, thereby reducing the probability of long-term blockage.

[0018] Optionally, when the rotating member rotates to the extreme position toward the base, a clearance groove is formed between the fixed member and the rotating member below the drainage channel; the two ends of the clearance groove are respectively connected to the drainage channel and the drainage groove, and the clearance groove is flared toward the direction approaching the drainage channel.

[0019] By adopting the above technical solution, when there is mud and sand in the drainage channel or drainage trough, the mud and sand will enter the drainage channel with the surface water and gather in the give way trough, making it easier for subsequent staff to remove the mud and sand; at the same time, when the rotating part is difficult to be enclosed with the fixed part due to the presence of mud and sand in the give way trough, stepping on the rotating part can drive the mud and sand to move in the give way trough so that the two can be smoothly enclosed together.

[0020] Optionally, the fixing member is fixedly connected to two adjacent bases at the same time.

[0021] By adopting the above technical solution, the fixing parts can effectively improve the structural stability between adjacent bases, and at the same time can effectively reduce the probability of surface water entering the drainage space and seeping through the gaps between adjacent bases.

[0022] Optionally, the bottom of the extension plate has a plurality of spikes for piercing the extension portion.

[0023] By adopting the above technical solution, the extension part can be pierced by the sharp thorns when the base is installed, thereby further strengthening the positioning of the waterproof layer and reducing the probability of the waterproof layer shifting during the installation of the base.

[0024] Optionally, the spike extends obliquely downward in a direction away from the other extension plate.

[0025] By adopting the above technical solution, the process of the spike piercing the extension part can have the effect of expanding the waterproof layer toward both sides, thereby effectively improving the construction quality of the waterproof layer, reducing the probability of the waterproof layer forming wrinkles during the installation of the base and causing the wrinkles to be easily damaged, and thus effectively extending the service life of the waterproof layer.

[0026] In summary, this application has at least one of the following beneficial effects: 1. It can facilitate the construction of drainage ditch structures around the foundation pit, reduce the difficulty of construction, and effectively ensure the drainage effect of the drainage ditch on surface water and its long-term stability; 2. It can facilitate the staff to clear the silt blockage inside the drainage ditch, so that the drainage ditch structure can be stable for a long time around the foundation pit and play a role in intercepting and draining; 3. The drainage ditch can automatically improve its drainage and water interception effects when there is a lot of surface water, and can continue to drain surface water when the drainage holes are blocked by sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a partial top view of a drainage ditch structure around a foundation pit according to an embodiment of the present application; Figure 2 This is a partial structural diagram of a drainage ditch structure around a foundation pit according to an embodiment of the present application; Figure 3 This is a cross-sectional view of a drainage ditch structure around a foundation pit in an embodiment of the present application during normal drainage; Figure 4 This is a cross-sectional view of a drainage ditch structure around a foundation pit in an embodiment of the present application when clearing sediment; Figure 5 This is a cross-sectional view of a drainage ditch structure around a foundation pit in an embodiment of the present application when the drainage volume is large.

[0028] Explanation of the accompanying symbols: 1. Foundation; 11. Foundation pit; 12. Groove; 2. Waterproof layer; 21. Extension; 3. Base; 31. Extension plate; 311. Perforation; 312. Spike; 32. Installation groove; 4. Positioning rod; 41. Grouting hole; 5. Drainage device; 51. Fixing part; 52. Rotating part; 521. Drainage groove; 522. Give way groove; 53. Drainage board; 531. Drainage hole; 532. Anti-slip protrusion; 54. Floating part; 6. Installation space; 7. Drainage channel. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] Reference Figure 1 and Figure 2 The embodiment of the present application discloses a drainage ditch structure around the foundation pit, which can intercept and drain surface water flowing toward the foundation pit 11, guide the surface water to flow to a designated location and then collect it, thereby reducing the probability of surface water entering the foundation pit 11 and causing an impact.

[0031] Before constructing the drainage ditch structure, workers first excavated a groove 12 on the ground surrounding foundation pit 11 for the drainage ditch structure. Groove 12 surrounds foundation pit 11 and extends outward to include a drainage section for draining surface water. This drainage section then leads to a structure for collecting surface water. In this embodiment, since the drainage section for draining surface water from the drainage ditch structure and the structure for collecting surface water are both prior art, they will not be described in detail here and are omitted from the accompanying drawings.

[0032] Reference Figure 2 and Figure 3 The drainage ditch structure includes a waterproof layer 2, multiple bases 3, multiple positioning rods 4, and multiple drainage devices 5. The waterproof layer 2 is used to prevent surface water from infiltrating and affecting the foundation 1 below the drainage ditch structure; the base 3 is used to ensure the overall structural strength of the drainage ditch structure and serves as a construction carrier for the positioning rods 4 and drainage devices 5; the positioning rods 4 are used to improve the positional stability of the drainage ditch structure relative to the foundation 1; and the drainage devices 5 are used to intercept and drain surface water flowing toward the foundation pit 11.

[0033] The bottom wall of groove 12 is a curved surface with its opening facing vertically upward. Waterproof layer 2 has a certain degree of flexibility and is laid along the trajectory of groove 12. After laying, it covers the bottom wall of groove 12 and abuts against it. It also has extensions 21 on both sides that are located above and in contact with the ground surface. In this embodiment, the cross-section of groove 12 is preferably semicircular, and waterproof layer 2 is preferably a polymer waterproof membrane.

[0034] The base 3 is a semicircular plate-shaped structure as a whole, and both ends of its arc trajectory have extension plates 31 extending outward in their own radial direction; when the base 3 is constructed in the groove 12, it is placed in the groove 12 with the arc opening facing vertically upward, and its bottom surface fits in and abuts against the waterproof layer 2 below it, and the two extension plates 31 fit in and abut against the extension parts 21 below them respectively; after the base 3 is placed in the groove 12, the length direction of the base 3 is parallel to the extension direction of the groove 12, and multiple bases 3 are compactly arranged in the groove 12 along the extension direction of the groove 12, so that adjacent bases 3 remain in contact and abut against each other.

[0035] Furthermore, the base 3 preferably has a plurality of spikes 312 at the ends of the extension plates 31 on both sides for assisting in positioning itself and the waterproof layer 2 , and the plurality of spikes 312 are evenly spaced along the length direction of the extension plates 31 .

[0036] After the base 3 is placed in the groove 12 , the spike 312 will pierce the corresponding extension portion 21 and then be inserted into the foundation 1 , thereby improving the position stability of the base 3 on the foundation 1 and the relative position stability between the waterproof layer 2 and the base 3 .

[0037] Furthermore, it is preferred that the spike 312 is inclined downward in a direction away from the installation space 6 relative to the extension direction of the extension plate 31 .

[0038] At this time, when the spike 312 pierces the corresponding extension part 21, it will apply a component of force outward along the width direction of the extension part 21 to the extension part 21, thereby being able to have a certain expansion effect on the extension part 21 in this process, reducing the probability of the waterproof layer 2 being displaced and wrinkled when the base 3 is placed in the groove 12, thereby effectively avoiding concentrated damage to the wrinkles of the waterproof layer 2 and extending the service life of the waterproof layer 2.

[0039] The positioning rod 4 is a round rod structure as a whole, and the extension plate 31 is penetrated along its thickness direction with multiple through holes 311 for the positioning rod 4 to pass through; the tail of the positioning rod 4 has a pointed structure to facilitate it to pierce the waterproof layer 2 and insert into the foundation 1.

[0040] After the base 3 is placed in the groove 12, it is positioned on the foundation 1 through multiple positioning rods 4; the tail of the positioning rod 4 passes through the through-hole 311 and is inserted into the foundation 1 until the head of the positioning rod 4 contacts and abuts against the extension plate 31, and the positioning rod 4 is continued to be driven to be inserted when the head of the positioning rod 4 contacts and abuts against the extension plate 31, so that the base 3 can drive the waterproof layer 2 to continue to squeeze the foundation 1 downward, making the foundation 1 under the groove 12 more solid and reducing the probability of it settling due to the infiltration of surface water; when the base 3 is positioned, the end face of the top of the extension plate 31 is flush with the ground surface, and the end face of the head of the positioning rod 4 is flush with the end face of the top of the extension plate 31, while effectively reducing the gap between the base 3 and the waterproof layer 2.

[0041] A grouting hole 41 for pouring concrete is provided inside the positioning rod 4. One end of the grouting hole 41 passes through the head of the positioning rod 4 to facilitate the staff to pour concrete into the foundation 1 through the grouting hole 41. The other end of the grouting hole 41 is divided into multiple branches after diversion, which makes it convenient for the concrete to enter the foundation 1 and diffuse outward around the positioning rod 4, further improving the structural strength of the foundation 1 below the groove 12.

[0042] The base 3 has an upwardly opening mounting groove 32 , and the mounting grooves 32 of the bases 3 are interconnected to form a mounting space 6 for mounting the plurality of drainage devices 5 .

[0043] The drainage device 5 is compactly arranged in the installation space 6 along the extension direction of the installation space 6 , and includes a fixing member 51 , a rotating member 52 , two drainage plates 53 and a floating member 54 .

[0044] The fixed member 51 and the rotating member 52 are both of a quarter-cylinder structure, and each has a cavity inside. The fixed member 51 is fixedly connected to the base 3, and its arcuate surface is in contact with the wall of the installation groove 32. The rotating member 52 is rotatably connected to the fixed member 51, and its rotation axis is parallel to its own length and the length of the fixed member 51. During its rotation relative to the fixed member 51, its arcuate surface can be in contact with the wall of the installation groove 32. In this embodiment, the fixed member 51 is preferably fixedly connected to the base 3 by a plurality of bolts, and the rotating member and the fixed member 51 are preferably rotatably connected by a plurality of hinges. Since both fixed connection by bolts and hinges are common existing technologies, they are not described in detail here. In the drawings, the bolts are omitted and the hinges are only briefly shown.

[0045] Furthermore, to improve the positional stability between adjacent bases 3 and reduce the probability of surface water infiltration through the gaps between adjacent bases 3, it is preferred that the fixing member 51 is fixedly connected to both bases 3 at the same time, and the two adjacent bases 3 are preferably symmetrically distributed with respect to the fixing member 51. In this embodiment, the length of the base 3 is preferably equal to the length of the fixing member 51.

[0046] The drainage plate 53 is a rectangular plate-shaped structure as a whole. It has a plurality of drainage holes 531 for surface water to pass through it along its thickness direction, and the plurality of drainage holes 531 are evenly distributed on the drainage plate 53; the cavities of the fixed part 51 and the rotating part 52 are both formed with openings on one side of themselves for the fixed installation of the drainage plate 53. After the drainage plate 53 is installed, its length direction is parallel to the length direction of the corresponding fixed part 51 or the corresponding rotating part 52 and the end face is flush, so that the cavity can communicate with the outside world through the plurality of drainage holes 531.

[0047] The rotating member 52 is restricted in its rotation relative to the fixed member 51 .

[0048] Reference Figure 3 and Figure 4 When the rotating member 52 rotates to the extreme position toward the base 3, the rotating member 52 contacts the fixing member 51 to form a semi-cylindrical structure and the whole is located in the installation space 6. The cavity of the rotating member 52 and the cavity of the fixing member 51 together form a drainage channel 7, guiding surface water to flow along the extension trajectory of the groove 12, and at this time, the two drainage plates 53 are both horizontal and flush with the end surface of the top of the base 3.

[0049] Furthermore, as surface water enters the drainage channel 7 through the drainage holes 531, surface sediment will easily enter the drainage holes 531 and form a blockage. When a certain degree of sediment blockage occurs on the drainage plate 53, the surface water flowing through the drainage plate 53 will not be able to enter the drainage channel 7 through the multiple drainage holes 531 in time, resulting in the drainage interception effect of the drainage ditch structure being affected. Therefore, it is preferred that a plurality of drainage grooves 521 are provided on the arc surface of the rotating part 52 away from the corresponding drainage plate 53, and a plurality of makeshift grooves 522 for surface water and sediment to pass through are provided on the end of the rotating part 52 away from the corresponding drainage plate 53.

[0050] The plurality of clearance grooves 522 correspond one to one with the plurality of drainage grooves 521. The drainage grooves 521 extend along the arc trajectory of the rotating member 52, with one end of the arc trajectory forming an opening on the side of the rotating member 52 close to the corresponding drainage plate 53, and the other end of the arc trajectory communicating with the corresponding clearance groove 522.

[0051] When the rotating member 52 is rotated to its limit position toward the base 3, the two ends of the clearance groove 522 are respectively connected to the bottom of the drainage channel 7 and the corresponding drainage groove 521. At this time, surface water that has flowed over the drain plate 53 and failed to enter the drainage channel 7 through the multiple drainage holes 531 can flow to the position where the rotating member 52 is close to the adjacent extension plate 31. It can then enter the drainage groove 521 from the position between the rotating member 52 and the adjacent extension plate 31, flow along the drainage groove 521, and then enter the drainage channel 7 through the clearance groove 522 and be discharged.

[0052] Furthermore, after the staff clears the mud and sand in the drainage channel 7 and rotates the rotating part 52 to reset it, it is easy for the rotating part 52 to be unable to be completely reset due to the mud and sand remaining on one side of the fixing part 51, and the mud and sand are also easy to break. When the surface water enters the drainage channel 7 through the drainage hole 531 or the drainage groove 521, it enters the yield groove 522, causing the rotating part 52 to be lifted by the mud and sand and rotate slightly in the direction away from the base 3. Therefore, it is preferred that the yield groove 522 is expanded in the direction close to the corresponding drainage plate 53.

[0053] At this time, the staff applies a downward force on the rotating part 52 by stepping on it, which can drive the rotating part 52 to rotate toward the base 3 to the extreme position for reset; in this process, the mud and sand on one side of the fixed part 51 will be squeezed into the adjacent makeshift groove 522 after contacting the rotating part 52, and the mud and sand in the makeshift groove 522 will be squeezed by the fixed part 51 and the rotating part 52 and move toward the drainage channel 7, so that a small amount of mud and sand can be discharged along the drainage channel 7 with the surface water.

[0054] When the rotating member 52 rotates to the extreme position in the direction away from the base 3, the rotating member 52 will contact the fixed member 51 and be located above the fixed member 51. The cavity of the rotating member 52 and the cavity of the fixed member 51 will be directly exposed to the outside, making it convenient for the staff to clear the mud and sand in the drainage channel 7, and at this time the two drainage plates 53 will contact and resist each other.

[0055] Furthermore, since surface water will enter the drainage channel 7 through multiple drainage holes 531 when flowing through the drainage board 53, the end surface of the drainage board for workers to step on when passing by is prone to slipping due to moisture. In order to improve the safety of workers passing through the drainage ditch structure, it is preferred that the drainage board 53 has multiple anti-slip protrusions 532 on its end surface for workers to step on.

[0056] The multiple anti-slip protrusions 532 can effectively increase the friction between the soles of the staff's shoes and the drainage board 53, thereby effectively reducing the probability of the staff slipping when stepping on the drainage board 53.

[0057] Furthermore, in order to facilitate the staff to clear the mud and sand that blocks the drainage holes 531, it is preferred that the multiple drainage holes 531 on one drainage board 53 correspond one-to-one with the multiple anti-slip protrusions 532 on another drainage board 53, and it is preferred that the distribution pattern of the multiple drainage holes 531 on one drainage board 53 is the same as the distribution pattern of the multiple anti-slip protrusions 532 on the other drainage board 53.

[0058] At this time, when the multiple drainage holes 531 of the drainage plate 53 are blocked by mud and sand, the rotating part 52 is controlled to rotate to the extreme position in the direction away from the base 3, and the multiple anti-slip protrusions 532 on one drainage plate 53 will be respectively inserted into the multiple drainage holes 531 on the other drainage plate 53, so that the mud and sand originally blocked the drainage holes 531 can be cleared away and enter the cavity of the corresponding fixing part 51 or the cavity of the corresponding rotating part 52, making it convenient for the staff to clear the mud and sand at this time.

[0059] Reference Figure 2 and Figure 3 The floating member 54 is generally strip-shaped and fixedly mounted on the rotating member 52 at the end of the rotating member 52 away from the corresponding drain plate 53. Its length is parallel to the length of the rotating member 52. In this embodiment, the floating member 54 is preferably fixedly mounted on the rotating member 52 in a chiseled manner. It is located on the side of the rotating member 52 closest to the cavity of the rotating member 52 and is flush with the inner curved end surface of the rotating member 52 after installation.

[0060] Reference Figure 3 and Figure 5 The density of the floating member 54 is less than that of surface water. When a large amount of surface water flows into the drainage channel 7, the drainage ditch needs to improve its interception and drainage performance to meet the demand. At this time, the surface water flowing in the drainage channel 7 exerts a greater buoyancy on the floating member 54. Under the action of the buoyancy, the floating member 54 drives the rotating member 52 to rotate a certain distance away from the base 3. At this time, the width direction of the drainage plate 53 on the rotating member 52 is tilted upward toward the foundation pit 11. At this time, more of the multiple drainage grooves 521 are exposed to the ground surface, making it easier for surface water to drain into the drainage channel 7 through the drainage grooves 521, thereby improving the drainage performance of the drainage ditch structure. At the same time, the portion of the rotating member 52 and its corresponding drainage plate 53 located above the groove 12 can improve their interception effect on surface water. The impact force generated by the surface water flow on the drainage plate 53 on the rotating member 52 also helps surface water quickly pass through the drainage hole 531 into the drainage channel 7 and has a certain clearing effect on the drainage hole 531.

[0061] When the amount of surface water to be discharged into the drainage channel 7 is reduced to a certain extent, the rotating member 52 will rotate and reset in a direction close to the base 3 under the action of its own gravity.

[0062] The implementation principle of the drainage ditch structure around the foundation pit in the embodiment of the present application is as follows: During the construction process, the workers first excavate the groove 12 around the foundation pit 11, then lay the waterproof layer 2 along the track of the groove 12, then place multiple bases 3 in the groove 12 and complete the positioning of the bases 3 using multiple positioning rods 4. After that, concrete is poured into the foundation 1 through the positioning rods 4 to strengthen the structural stability of the foundation 1 below the groove 12. Finally, the fixing member 51 is fixed on the base 3, and the rotating member 52 is controlled to rotate in the direction close to the base 3 to the limit position. During use, surface water flowing toward the direction approaching the foundation pit 11 will enter the drainage channel 7 through multiple drainage holes 531 or multiple drainage grooves 521 when flowing through the top of the drainage ditch structure, and then be discharged along the drainage channel 7; when the amount of surface water entering the drainage channel 7 is large, the floating part 54 will be driven by the buoyancy of the surface water to drive the rotating part 52 to rotate a certain amplitude in the direction away from the base 3, thereby improving the drainage interception effect of the drainage ditch structure to meet the needs; when mud and sand blockage occurs in the drainage hole 531 or the drainage channel 7, the staff can control the rotating part 52 to rotate to the extreme position in the direction away from the base 3. At this time, multiple anti-slip protrusions 532 can clear the blockage of multiple drainage holes 531, and it is convenient for the staff to clear the mud and sand in the cavity of the fixed part 51 and the cavity of the rotating part 52.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A drainage ditch structure around a foundation pit, arranged around a foundation pit (11), wherein a groove (12) for its construction is excavated around the foundation pit (11), characterized in that: It comprises a waterproof layer (2), a plurality of bases (3), a plurality of positioning rods (4) and a plurality of drainage devices (5); The groove (12) is an arc-shaped groove with an arc opening pointing vertically upward, and the groove (12) extends outward to form a drainage section for draining surface water; The waterproof layer (2) is laid on the bottom wall of the groove (12), and both sides thereof extend outwards to form extension portions (21) located on the ground surface around the foundation pit (11); the base (3) is arranged in the groove (12), and a plurality of the bases (3) are compactly arranged in the groove (12); the bottom of the base (3) is in contact with the waterproof layer (2), and both sides thereof extend outwards to form extension plates (31) whose bottoms contact the extension portions (21); The extension plate (31) is provided with a plurality of through-holes (311) for the positioning rod (4) to pass through, and the interior of the positioning rod (4) is provided with a grouting hole (41) for pouring concrete into the foundation (1); after the positioning rod (4) passes through the through-holes (311) and pierces the extension portion (21), the base (3) is positioned so that the top of the extension plate (31) is flush with the end surface of the ground, and one end of the grouting hole (41) is exposed and the other end is located in the foundation (1); The base (3) has an installation groove (32) for installing the drainage device (5), a plurality of the installation grooves (32) are connected to form an installation space (6), and the plurality of drainage devices (5) are compactly arranged in the installation space (6); The drainage device (5) has a drainage channel (7) inside, and the top of the drainage device (5) has a plurality of drainage holes (531) communicating with the drainage channel (7).

2. A drainage ditch structure around a foundation pit according to claim 1, characterized in that: The drainage device (5) comprises a fixed part (51), a rotating part (52) and two drainage plates (53); the drainage hole (531) is provided on the drainage plate (53), and the two drainage plates (53) are respectively provided on the fixed part (51) and the rotating part (52); The rotating member (52) is rotatably connected to the fixing member (51), the fixing member (51) is fixedly connected to the base (3) and the bottom of the fixing member (51) is in contact with and abuts against the bottom wall of the mounting groove (32), and the rotating member (52) remains in contact with and abuts against the bottom wall of the mounting groove (32) during the process of rotating in the mounting groove (32); When the rotating member (52) rotates to the extreme position in a direction approaching the base (3), the drainage device (5) is located in the installation space (6) as a whole, and the two drainage plates (53) are located on the top of the fixed member (51) and the rotating member (52), respectively, and the fixed member (51) and the rotating member (52) together enclose the drainage channel (7); when the rotating member (52) rotates to the extreme position in a direction away from the base (3), the rotating member (52) leaves the installation space (6) and is located above the fixed member (51).

3. A drainage ditch structure around a foundation pit according to claim 2, characterized in that: The drainage board (53) is provided with a plurality of anti-slip protrusions (532) for stepping on.

4. A drainage ditch structure around a foundation pit according to claim 3, characterized in that: When the rotating member (52) rotates to an extreme position in a direction away from the base (3), the anti-slip protrusion (532) on one drainage plate (53) is inserted into the drainage hole (531) on the other drainage plate (53).

5. The drainage ditch structure around a foundation pit according to claim 2, characterized in that: A drainage groove (521) is provided on a side of the rotating member (52) facing away from the drainage plate (53). When the rotating member (52) rotates to an extreme position in a direction close to the base (3), both ends of the drainage groove (521) communicate with the drainage channel (7) and the space between the rotating member (52) and the top of the base (3).

6. The drainage ditch structure around the foundation pit according to claim 5, characterized in that: The drainage device (5) further includes a floating member (54); The floating member (54) is arranged on the rotating member (52), and the density of the floating member (54) is less than the density of surface water.

7. The drainage ditch structure around a foundation pit according to claim 5, characterized in that: When the rotating member (52) rotates to an extreme position in a direction close to the base (3), a clearance groove (522) is formed between the fixing member (51) and the rotating member (52) below the drainage channel (7); the two ends of the clearance groove (522) are respectively connected to the drainage channel (7) and the drainage groove (521), and the clearance groove (522) is expanded in a direction close to the drainage channel (7).

8. The drainage ditch structure around a foundation pit according to claim 2, characterized in that: The fixing member (51) is fixedly connected to two adjacent bases (3) at the same time.

9. The drainage ditch structure around a foundation pit according to claim 1, characterized in that: The bottom of the extension plate (31) has a plurality of spikes (312) for piercing the extension portion (21).

10. The drainage ditch structure around a foundation pit according to claim 9, characterized in that: The spike (312) extends obliquely downward in a direction away from the other extension plate (31).

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